ATTN: Dodge Mechanics.............?

Was there ever a memo sent out about valve cover replacement for the Dodge Caravan (1999)?? I was talking with someone about the minor oil smoke (From tail pipe) that the 3.3L V6 seems to develope over time....He said that he had received some memo that said the valve covers were to close to the valves and because of this, the PCV valve would suck oil and cause the smoke problem.....Replacing them with a new modified valve cover set would solve the problem....It doesn't sound right.......I always thought it was a Valve/Ring issue. Not a PCV.......Did anyone out there ever hear about this???